My hope, and I think it's something Macron is probably trying to make happen is to unofficially partition Ukraine into two zones: An active conflict zone and peacekeeping zone. Move EU troops and assets into western & central Ukraine and assume all defensive duties along the Ukraine-Belarus, and Ukraine-Moldova borders under Ukie supervision. Take over air defence duties over those regions as well. This would allow the Ukrainians to free up man and material resources they're using in the central and western parts of the country right now without putting EU troops directly at risk.